Combined typewriting and computing machine



H. MARSHALL.

COMBINED TYPEWHITING AND COMPUTING MACHINE. APPLICATION FILED SEPT. 9. 1912.

Patented Jan. 10, 1922.

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APPLICA ION FILED SEPT- 9.1912.

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H. MARSHALL.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED SEPT. 9, I9I2.

1,403-,1 30. Patented Jan. 10, 1922.

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Mvvvzrssas -'UNITED STATES PATENT OFFICE.

HOLMES MARSHALL, OF CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

REMINGTON ACCOUNTING MACHINE CORPORATION, OF NEW YORK, N. Y., A COR- PORATION OF NEW YORK.

I COMBINED TYIEWRITING AND COMPUTING MACHINE.

Specification of Letters Patent.

Patented Jan. 10, 1922.

Application filed September 9, 1912. Serial No. 719,322.

To (/17- whom it may concern Be it known that I, HoLnEs h'IAnsHALL, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Combined Typewriting and Computing Machines, of which thefollowing is a full, clearyand exact description, reference being had to the accompanying drawings.

The object of this invention is to provide efiicient means whereby a typewriting machine equipped with an adding device may automatically print the totals through the agency of the numeral key bars of the type-- writer. A further object is to combinesuch operation with the operation of setting the adding device to zero, so that one operation automatically clears the accumulator for another addition and prints on the paper beneath the column of figures the correct total. In this way, inaccuracies are avoided and time is saved. The invention consists of mechanism combined with the typewriter and adder for accomplishing the objects stated.

I find it particularly convenient to apply my mechanism to a typewriting machine equipped with a \Vahl adding attachment. The lVahl attachment sets to zero by throwing the mechanism to subtracting position, so that the printing of the totals shown on the accumulator clears the accumulator. If, however, the operator prints the wrong amount as a total, not only is the column incorrectly footed, but the accumulator is not cleared, and then, if the operator does not notice this and starts -a new column, it will be wrongly added, and the errors in the two columns will balance each other so that they would be particularly difficult to detect. My mechanism, by rendering the operation automatic, prevents errors in the footing and thus overcomes the difficulty.

A convenient embodiment of the invention is herein shown, and hereinafter more fully described, in connection with a typewriter of the Remington type and an adding device of the \Vahl type.

Fig. 1 is a side elevation of my mechanism as connected to a Remington typewriter, having a ahl adding attachment with lower front extension of the totalizer casing and other parts broken away, and parts shown in section. This figure shows the parts not in their normal position, but in the position into which they are brought after the main operating handle of the machine has been turned through the first part of its cycle.

Fig. 2 is a.,front elevation of my mechanism having some of the parts broken away for clearness of illustration.

Fig. 3 is a plan of the mechanism omitting some of the upper parts for clearness of illustration.

Fig. 4 is a detail of the selective cam upon which the operation of my mechanism depends.

Fig. 5 is a section through the main driving gear showing its cam slot by which it is connected with the ribbon shifting mechamsm.

Fig. 6 is a detail of the supporting guide plate for the slidable bars.

Fig. '7 is a section of the roller clutch, taken through the bevel gear on the line 77 of Fig. 8.

Fig. 8 is an axial section through the same clutch.

Fig. 9 is a sectional detail of the roller clutch which drives the shaft onwhich are mounted the fingers for actuating the numeral keys.

Fig. 10 is a section through the shaft showing the same clutch.

Fig. 11 is a diagrammatic view of the selective cam, illustrating its various positions relative to each numeral key.

In the drawings, 1 indicates a base on which the typewriter is mounted; 2 the typewriter frame; 3 the traveling paper carriage; 6 a IVahl adding attachment moving with the carriage; 4 the numeral keys and key levers of the typewriter; and 5 a hand lever which operates my entire mechanism.

The 'ahl adding attachment may be understood from a reference to patent #968,103 granted August 23, 1910 to the Wahl Adding Machine Company, Chicago. Illinois, as assignee of B. R. Vebstenor pat ent No. 893,719 of J. Vahl. This adding attachment or adder has a master wheel 7, which is mounted on a stationary axis and suitably connected with the numeral keys of the typewriter. The casing 6 carries a series of transmitting wheels 8 and a series of accumulator wheels 9 which have pinions meshing with the transfer wheels. The casing is locked in desired position by the device 6 to racks 3 and 3 on the front bar of the travelingpaper carriage 3, so that, as the paper carriage escapes, one transmitting wheel after another is presented to the master wheel.

To the regular Vahl adding attachment I add a series of transmitting pinions 12 which mcsh with the transmitting wheels 8 of the \Vahl attachment, and rigid with each pinion 12 is a gear 11 which meshes with a gear 10 carrying a selective cam 14. It, accordingly, results that the various cams are successively positioned in correspondence with the position given the dial wheels by the master gear. Each cam 14 is on one side of its gear 10 and a disk 16 is on the opposite side of the gear, the cam gear and disk forming a unit. A series of these units are loosely mounted side by side on arod 15. The cams act on the upper ends of levers 17 which are guided by the disks 16.

These levers 17 are intermediately pivoted, and pivotally support at their rear ends downwardly extending arms 18 having at their lower ends the racks 19. These racks 19 are adapted to engage pinions 20, rigid on the sides of gears 21, which are loo ely mounted upon the shaft 23 extending across the base and suitably journaled at each end. This shaft, has an enlarged dimeter at 24 extending to the shoulder 25 against which the series of gears and pinions 21 and 20 impinge, the smaller diameter being that part 23 on which these gears and pinions are mounted and held in place by a sleeve'26. In order that these gears and pinions may be held in their proper position and yet rotate separately from one another this sleeve 26 is adjustable by a nut 27.

30 indicates a series of slidable bars to the rear ends of which are pivoted arms 33. On the upper'edge of these arms are racks 35 adapted to engage the gears 21. The,

bars 30 with the1r arms 33 are slidable through the comb or guide plate 36 by means of their engagement with the gears 21. On the under sides and near the inner ends of the arms 33 are projections 37 which are adapted to engage and press downwardly any of a series of bails 40, each of which is connected to its respective numeral key bya small rod 41 which hooks freely over the top of the key lever. As these bails 40, which are pivoted atjpoints 43, Fig.3, extend across and beneath all .of the arms 33,

.it will be seen that any of these bails may be conveniently operated by any arm 33 and thus draw down the desired numeral key levers 4. I

.to the housing 60.

On the front wall of the base 1, mounted in a horizontal position, is a housing 50, having therein a series of tubular openings in which the ends of the bars 30 are adapted to slide, against the spring pressure of springs 51. It will be seen from the arrangement of the parts heretofore described that the position of each projection 37 over any of the bails 40 is dependent upon the position of the corresponding heart-shaped cam 14, through the lever 17, the arm 18, the pinion 20 (meshing with a rack 19 on the arm), the connected gear 21, and the rack 35 on the arm 33. Accordingly, the depression of any of these arms 33, when the projection 37 is in a position to engage any of the bails 40, will operate the numeral key lever 4 of the typewriter corresponding to the number shown on the dial wheel 9, and will thus print on the paper the totals required. The means for depressing these levers automatically with the movement of the hand-lever, I will now describe.

On the upper edge of the bars 30 are teeth 34 of the ratchet shape shown in Figure 1,

the spacing of which is the same as the spacing of the bails 40. These teeth are adapted to be engaged by the rod 55 when the member 37 is in the desired position over one of the bails 40. The rod 55 is part of a bail, the side arms 56 of which extend to annular portions 57, which are loosely mounted on the shaft 23. On the opposite sides of these annular portions the arms 59 extend back to a pair of cams 58, similar to each other. The earns 58 are so shaped as to hold the rod '55, against the pressure of the springs 54 out of engagement with the teeth 34' during the p'ositioning of the members 30 and into engagement wit 1 said teeth during the depression of the ar s 33.

Near the central portions of the arms 33 are supports formed by the housing60, similar to themember 50, mounted on a flat strip 61 which extends across the lower portion of the base 1. The arms 33 pass through slots 63 in the upper part of the housing 60 and are supported by springs 62 which tend to keep the rack 35 in engagement with the gear 21. Over the respective arms 33 are mounted the plungers 64 slidable in the members 65 which are pivoted at points 66 The plungers 64 are held in the position shown by the springs 67 and are adapted to press downwardly upon the arms 33. These plungers 64 are adapted to be thrown into the upright position shown in full lines in Fig. 1 by the impinging of the teeth of the gear 21 against the side of the member 65, or are allowed to be thrown to the left, as indicated' by dotted lines, by the action of the spring 68. This position is the inoperative or idle position in which it is not adapted for engagement with the radial depressing fingers 70, as it is allowed to fall back against that portion of the gear 21 on which the teeth are cut.

away. Such a position of these plungers 64 is required only over those levers 33 which would normally print the zeros to left of the first figure of a number to be printed as the total, in cases when it has less digits than the number of dial wheels in the adder 6. i

To provide for the proper printing of any zeros to the right of the first figure to be printed, each of the members 65 18 adapted to carry with it to the upright or operative position all of the members 65 to the right of it. This is accomplished by a small lug 69 at the top, and on the side of each member 65 near the gear 21. This lug 69 is formed to fit into a suitable recess in the member 65 adjacent it at the right and impinges the side of this recess to carry into operative position such adjacent member 65.

To insure the proper escapement or spacing movement of the carriage, notwithstanding the zeros at the left of the first figure to be printed, and to properly position the printed total on the paper, to bring it in column with other totals printed, I provide a special spacing device as follows. On a shaft 71, under one of the levers 85 of the space bar of the typewriter are radial fingers 86, similar to the fingers 70, which engage the horizontal portion of the stirrup 87 rigid on the lever 85. This engagement causes the spacing or escapement of the carriage once for each finger 86. The spacing of these radial fingers 86 is the same as the fingers 70, and they are so positioned as to depress the spacing lever at. the same time as the corresponding finger 70 should engage its plunger 64.

The shaft 71 extends across the upper portion of the base, and is journaled at each end,

and driven by means of a gear 72, which acts through a roller clutch, driving throu h a roller 73, adapted to drive only in one irection. Radial fingers 70 are mounted upon the shaft 71 in alinement with the plungers 64 and each one spaced a little behind the other, so that in revolving the shaft each finger will be out of engagement with its respective plunger a little before the next one engages the adjacent plunger.

The arrangement of the fingers 70 on the shaft 71 is such that the left hand plunger 64 (Fig. 3) will be actuated first and the other plungers 64 successively thereafter.

The gear 74 is driven by the main gear 75, which is firmly mounted on the short shaft 78 and driven by the hand lever 5. On the shaft 71 are mounted another pair of similar cams 77 which operate the rod 80, supported by arms 81 forming a bail, similar to the one of which the rod 55 is a part, and tending to hold all of the arms 18 with their racks 19 in an engagement with the pinions 20,. against the action of the springs 84,

while the members 37 are being positioned for the depression of the numeral keys, after which the bail 80 allows these racks 19 to fall back and the arms 18 are moved upwardly by means of a light spring on each of the levers 17.

After writing the totals in the manner herein described, it is necessary to set the bars 30 and arms 33 back to a position in which the members 37 will not engage any of the bails 40. To provide effective means for accomplishing this I mount a flat bar 90 on racks 91, which are slidable in bearings 93, and on the inner edge of this bar I bend or extend down a portion 96 which is adapted to engage the ends of the arms 33 and move them forwardly to the position desired, when the racks move forwardly.

As a means for moving the racks 91 agalnst the action of their springs 95, I provide gears 97 mounted on the lower ends of shafts 98 on the upper ends of which are small bevel gears 99. These bevel gears 99 are driven in one direction by bevel gears 100 on each end of the shaft 94, from which half of the teeth are removed, as half of the teeth are sufficient to move the racks 91 far enough to properly positionthe rods 33, and, during the other half of the revolution the springs 95 return the racks to the posit1on shown in Figs. 1 and 3.

As I-desire to move the hand lever 5 for ward and downwardly and then return it through the same arc, I have provided the roller clutch on the shaft 71, adapted to drive it in one direction only (as shown in Figures 9 and 10) and I also provide a similar roller clutch on the gear 100 adapted to be driven by the gear 102 in one direction only, as shown in Figs. 7 and 8. The directions of operation of these mechanisms are so arranged that on .the forward downward movement of the hand lever 5 the shaft 71 is driven fin the proper direction while the gear 109 and the rack mechanism remains idle, and on the upward or return movement of the hand lever 5 the shaft 71 remains idle and the gear 100 drives the gear 99 and the gear 97, and moves the racks 91 forward as heretofore described.

It will be seen that the sizes of the gears in the trains described are such that one-half of the revolution ofthehand lever'5 will give the shaft '71 a complete revolution and that the return half of the revolution of the hand lever 5 will give the gear 100, driving through the idler gear. 104, a complete revolution, which gives the movements required. In the 'Wahl adding attachment it is desirable, when about to write ,the totals, to setthe mechanism for subtraction, so that, as each of the numeral keys is depressed, the corresponding dial wheel will be set back to O. This is accomplished by the lateral 50 v 7 from O to 9 indlcate corresponding numovement of a rod 110, (Fig. 2) connected with the actuator and having a pin 112 engaging a'cam slot in the arc-shaped plate 111. This plate is moved by the raising of a rod 113, which loosely engages a pin extending forward from an arm 114. This arm is attached to the indicator 115. which shows the color of ribbon being used and is so connected that it controls the ribbon shifting, so that the printing has a distinctive color whenever totals are being printed.

The movement to substracting position is allowed only when the adding attachment is in its proper position relative to the respective levers 17. by reason of the abutment of the pin 116 (Fig. 2) against the rock lever 117, which engages the rod 110 at the notches 118, thus preventing this movement except when the parts are in the position shown in Figure 2. This lever 117 is held normally in engagement with the rod 110 by means of the spring 119. Attached to the arm 114 is a rock shaft 120 (Figs. 1 and 3), on the other end of which is an arm 121 loosely engaging the upper end of the rod 123. At the lower end of this rod is held the roller 125 in engagement with the cam slot in the gear (Fig. 5).

It will be seen from the arrangement described that when the roller 125 is at that part of the cam slot nearest to the periphery of the gear 75 that the parts are in normal.

or adding position. Now, when the lever 5 begins its movement, the roller 125 and the rod 123 are moved downwardly rocking the arm 121 on the rock shaft 120, thus moving the arm 114 upwardly, the arcual cam 111 upwardly, and moving the rod 110 toward the adding attachment, thus setting parts in substracting position. The parts are so proportioned that the cam slot in the gear 75 hasset the machine for substraction during the preliminary operation of transferring the number in the totalizer to the bars 30. Therefore the machine is set for subtraction, and the ribbon is in the correct place before the printing begins.

In Fig. 11 the shape of the cam 14 is plainly shown and each of the numerals mera-l keys and numbers on the dials. It will be seen that the movement of the lever 17 from 0 to 5 is the full movement given by the cam, and that the shape of the other lobe of the cam (from 5 to O) is slightly different from that from 0 to 5, thus selecting different numeral keys corresponding to different numerals on the dial on the outstroke, as well as the in-stroke of the cam. This allows the most economical use of the movements given by this cam, as I utilize the full movement twice in each revolution of the cam; that is to say, if the position of the projections -37, as shown in Fig. 1, is

levers or feelers 17 are below the disks 16 and out of contact with thecams' 14 and bail 80 forms a stop against which rack bars 18 are held by springs .84. On the forward stroke of the hand lever 5 shaft 71 is turned with the result: first, the cross bar of bail 80 moves back and forces racks 19 into engagement with pinions 20; second, bail 55 releases bars 30 whereupon springs 51 drive these bars back until the tops of feelers 17 are in contact with cams 14; third, bail 55 re-engages bars 30 and holds them in their set positions; and fourth, cross bar of bail 80 is allowed to move forward whereupon racks 19 are withdrawn from pinions 20 by springs 84 and the front arms of feelers 17 are swung downward by their springs while bars 18 are drawn upward. At the end of this swinging movement of feelers 17 their positions are those which they held at the start of the operation. The feelers stay in those positions, racks l9 stay disengaged-from pinions 20, and yoke 55 stays in contact with ratchet teeth 34 of bars 30, during the remainder of the forward swing and during all of the backward swing of hand lever 5, and until that lever is swung forward again from its n rmal position in the next operation.- Just after the hand lever starts to swing forward, and before the finger at the left of the series of fingers 7 0 reaches the plunger at the left of the series of plungers 64, and while some or all of the four above mentioned steps of the operation are being performed, the roller 125 moves down the inclined part of the cam slot in gear 75 and the machine is set for subtraction. As the hand lever 5 continues to swing forward and downward,

plungers 64 are successively depressed by ing about to swing so' as to allow springs 84 to pull racks 19 forward. Vith the upward and backward swing of hand lever 5.

a full rotation is imparted to shaft 94, and part 96 of bar 90, moving forward, restores bars 30, 33 to their normal positions, and then snaps back to its own normal position. When the bars 30 are pushed forward by bar 90, ratchet teeth 34 click under bail 55, which finally engages the rear tooth of each bar and holds all of the bars in the positions held by them at the start of the operation.

With the lV-ahl mechanism set for subtraction, as shown in Fig. 1, it will be seen that the moving of the hand lever 5 downward will drive through the gears, heretofore described, the shaft 71, and the fingers will engage the plungers "64 and thereby depress the arms 33, and through each projection 37 depress the bail 40 over which it stands, and thereby draw down the key lever and print the numeral, and at the same time set the numeral dials of the lVahl mechanism back to 0. In the complete revolution of the shaft T1 all of the plungers (54, which! are in an upright position, will be engaged and those in an inoperative-position will not be engaged; therefore, the proper totals will be printed, and the \Vahl mechanism set back to in the first half revolution of the hand lever It is obvious that my invention could be applied to typewriters other than type bar machines, such as the Bickensderfer or Hammond.

In some of the claims I use the expression a set of displaceable elements, and by this I mean a set of elements displaced to represent a number such as for instance the cams 14. It will be observed that these cams ar displaced by the action of the keys to represent a numberand that the displacement of these cams may be further modified by the action of the carrying mechanism. Obviously the action of the carrying mechanism is not always necessary to the operation of my device since, starting with the totalizer at zero, a number may be set up by the keys, and then the same number automatically printed by the automatic total printing mechanism. This will afford a check on the accuracy of the machine since the number set up is printed in the first place by the manual action of the keys and afterwards by the automatic printing mechanism. Should these two not agree there would result a blur on the printed work sheet, but if the mechanism is working properly the impression made by the automatic printing mechanism will be superimposed over the impressions made by the manual operation and a single impression will result. Consequently I may say that my automatic printing machine operates broadly with a set of displaceable elements. It is not necessary that these elements be connected by carrying mechanism as for instance in the precise form in which I show my device, viz., a totalizer. The displaceable elements may be directly connected print a registered total and for operating the register clearing means as the key levers are actuated, the action of the selecting means comprised in said mechanism being dependent on the positions of the devices registering the total.

2. The combination of a typewriting machine, an adding attachment, means for setting it into subtracting condition, and selecting and actuating mechanism for automatically printing by means of the numeral key levers of the typewriting machine the totals indicated by the adding attachment, whereby the same operation resets the adding attachment at zero, the action of the selecting means comprised in said mechanism being dependent on the' positions of the devices registering the totals.

3. The combination with a typewriting machine, of an adding attachment comprising a totalizer and a master wheel, adapted to insert numbers therein seriatim and'selecting and actuating mechanism for automatically operating thenumeral key bars of the typewriter machine to print th totals as indicated by said adding attachment, the action of the selecting means comprised in said mechanism being dependent on the positions of registering devices contained in the totalizer.

4. The combination, with a typewriting machine, of an adding attachment therefor, mechanism for automatically printing by the typewriting key bars the totals indicated by th adding attachment, and mechanism for automatically placing the adding attachment in subtracting condition before the printing of such total.

5. The combination of a typewriting machine having a traveling paper carriage, a master wheel carried by the typewriter frame, an accumulator movable with the paper carriage, mechanism for automatically depressing the numeral key levers, an operative connection between said mechanism and the accumulator, and means for automatically setting the accumulator to zero.

6. The combination, with a typewriting machine and a computing device, of aseries of cams controlled according to the dials of the computing device, and mechanism to connect such cams with the numeral key levers of the typewriter, for actuating the numcrn! typebars according to the indlcations o: th computer, said mechanism belng norxvsmy operate the bails and with the numeral keys thereof and having digit dials, a series of heart-shaped cams, one for each dial rotatively connected therewith, each cam having one lobe different from the other, and mechanism for operating the numeral key bars of the typewriter controlled by said cams.

9. .The combination, with a typewriting machine, of a computing device coacting with the numeral keys thereof and having digit dials, a series of heart-shaped cams, one for each dial rotatively connected therewith, each cam having one lobe different from the other, and mechanism for operating the numeral key bars of the typewriter controlled by said cams, th cams on one half of their rotation controlling alternate numeral key bars and on the other half controlling the intermediate key bars.

10. The combination with a typewriting machine having numeral types and a carriage, of a computing device including a. series of cams mounted to travel with said carriage, a series of bars arranged to be positioned by said cams and mounted on the stationary framework, and means for actuating said bars to operate the numeral types of the typewriter.

11. The combination with a typewriting machine and a key actuated computing device'co'nnected with the numeral keys thereof, the computing device having dials to which motion is imparted from the numeral keys, of a series of bails from which motion is imparted to the numeral type bars and keys, a series of 'calns controlled according to the dials of the computer, and bail-actuating mechanism including bailselecting devices on which the cams act.

12. The combination, with a typewriting machine, of a computing device coacting with the numeral keys of the typewriting machine, the computing device having dials to which motion is imparted from thenumerals keys, a series of bails connected with the respective key levers of the numeral keys, a series of cams connected with the dial wheels of the computer, bars extending transversely of the bails, mechanism controlled by the cams for controlling the position of the bars, and mechanism for automatlcally operating said bars seriatim to thereby the key levers and type bars.

13. The combination of a typewriting machine, a computing device connected therewith, a series of bails from which motion is imparted to the numeral key levers of the typewriting machine, a series of bars transverse of the bails and adapted to actuate any of them, mechanism connected with the computing device for positioning the-bars, and mechanism for automatically operating the bars seriatim.

14. The combination of a typewriting machine, a computing device connected therewith, a series of bails connected with the numeral key levers of the typewriter, members controlled by the computing device and positioned with reference to the respective bails, and a rotatable operating device having a series of spaced radial fingers for operating said members.

15. In a combined typewriting and calculating machine, the combination with types, and registering mechanism for accumulating numbers printed by said types, of means for automatically actuating said typewriter types to print the total indicated on said registering devices, said means including a series of cams one for,each denomination, operated in unison with said registering devices, a set of variably movable devices one device for each denomination, and on which said cams immediately act to aid in setting said devices in positions corresponding to those of the registering devices, and means whereby said variably movable devices select the numeral types to print the total,'said variably moving devices being out of contact with said cams during theattuation of said registering devices and being moved into contact with: said cams after the total has been accumulated.

16. The combination of a typewriting machine, a computing device connected therewith for operation by the numeral keys of the typewriter, a series of bails from which motion is imparted to the respective numeral key bars of the typewriter, a series of bars extending transversely of the bails, gearing connected with the computing device, a series of cams connected withsaid gearing, means with which the cams coactto position the bars and mechanism for operating the positioned bars.

17. The combination, with a typewriting machine, of an adding attachment therefor connected with the numeral keys thereof, a series of bails beneath the numeral key b'ars, links connecting the same with the numeral key bars, a series of transverse operating members for the bails, a series of cams connected with the adding attachment for operating the positioning mechanism, and a driving device for the positioned members consisting of a shaft having a series of differently positioned fingers.

18. The combination of, a typewriting machine, a computing device connected therewith, a series of numeral key levers, a series of bars, mechanism for connecting any bar with any numeral key lever, mechanism connected with the computing device for positioning said bars, an operating handle for said bars, mechanism operated by said handle in one part of its cycle for moving the positioned bars, and mechanism operated by said handle in another part of its cycle for returning the bars to their starting position.

19. The combination, with a typewriting machine, of a computing device connected therewith, bails connected with the respective numeral key levers, operating members transverse of the bails, an operating handle, a shaft connected therewith and having radial differently positioned fingers, a connection between said fingers and the operating members, a connection between the computing device and the operating members for positioning them according to the position of the computer dials, and mechanism operated on the reverse stroke of the lever for returning the operating members to starting position. I

20. The combination of, a typewriting machine, a computing device connected therewith, numeral key bars, members connecting with said bars, a series of transverse members for operating the first recited members, positioning mechanism between said computing device and said operating members, a lever for operating said positioned operating members, and means connected with said lever for shifting the computing mechanism to its subtracting position.

21. The combination of a typewriting machine, an adding attachment therefor, a series of bails connected with the numeral key levers of the typewriter, a series of transverse bars having operating arms adapted to be positioned to coact with any bail, a series of, cams connected with the adding attachment, mechanisms between said cams and said arms including a mutilated gear, plungers for operating said arms, and a rotatable shaft having wiping fingers adapted to engage the plungers or miss them, according to whether they are opposite the teeth of such gear or the non-toothed portion thereof.

22. The combination with a typewriting machine, of an adding attachment therefor, mechanism for actuating the numeral key bars of the typewriter, automatic mechanism connecting said mechanism with the adding attachment, and means brought into action by said first mentioned mechanism for shifting the typewriter ribbon consequent upon the movement of the adding attachment to the subtracting position.

23. The combination, with a typewriting machine and an adding attachment therefor, of a series of heart-shaped cams geared with the respective digit wheels of the adding attachment, said cams having their two lobes unequal, and numeral key bars'operating mechanism controlled by said cams.

24. The combination, with a typewriting machine, of an adding attachment'therefor, a series of units each geared with the corresponding dial wheel of the adding attachment and each unit consisting of the gear, a cam and a guiding disk, and mechanism for operating the key bars of the typewriter controlled by such cams and having a portion guided by such disks.

25. The combination, with a typewriting machine, an adding attachment therefor, aseries o'f cams geared with the adding attachment, operating mechanism connected with the respective type bars of the typewriter, actuating mechanism for such operating mechanism positioned according to the position of the I'GSPBCtlXG cams, an operating lever, mechanism connected with the lever for operating the actuating members which have been positioned, and mechanism connected with the lever for positioning the adding attachment in subtracting position.

26. In a typewriting calculating machine the combination of a setof types adapted to print a number on the work sheet, a calculating attachment in which register wheels are included and two means for bringing each of said types to the print-ing position and operating the register wheels while the printing is being done, one of said means being automatic and having its sequence of action determined by said calculating attachment and the other of said means being'v manual.

27. In a calculating machine the combination of a set of displaceable elements, printing means including a single set of figure types, a set of locating elements movable to and from positions in which they coact with said displaceable elements and automaticmechanism for bringing said. printing means into cooperation with said locating elements seriatim when the latter are disconnected from the displaceable elements whereby. the number represented by said set of displaceable elements may be automatically printed.

28. In a calculating machine, the combination of a set of displaceable elements, a set of keys adapted to operate said displaceable elements. printing means provided with a single set of figure types, a set of bars locatable in positions determined'by the position of said displaceable elements and automatic mechanism for bringing said printing means into cooperation with said bars seriatim whereby the number set up by the keys may be'automatically printed by said single set of-type.

29. In a calculating machine. the combination of a set of displaceable elements, printing means provided with a single set of figure types, a set of bars locatable in positions determined by the positions of said displaceable elements,-means to hold said bars in those positions when they are disconnected froin the displaceable element-s and automatic mechanism for bringing said printing means into cooperation with said bars seriatim whereby the number set up by the keys may be automatically printed by said single set of type.

30. In a calculating machine, the combination of a set of numeral printing bars, a set of displaceable elements to which movements are imparted when printing is being done, and automatic mechanism for operating said bars successively in a sequence'determined by the positions of said displaceable elements at the beginning of the operation.

31. In a calculating machine, the combination of a set of numeral printing bars, a set of displaceable elements, a set of key-actuated devices from which both the set of printing bars and the set of displaceable elements are operated, and automatic mechanism for operating said bars successively in a sequence determined by the position of said displaceable elements at the beginning of the operation.

32. In a calculating machine, the combination of a set of numeral printing bars, a set of displaceable elements, carrying mechanism co-operating with said displaceable elements, a set of key levers connected to the printing bars, mechanism connecting said key levers and displaceable elements, and automatic mechanism for operating said key levers successively in a sequence determined by the position of said displaceable elements at the beginning of the operation.

33. In a calculating machine, the combination of a set of numeral printing bars, a set of number wheels, means to operate any of the printing bars and any of the number wheels together, a set of displaceable elements geared to said number wheels, and automatic mechanism for operating said means to actuate said bars successively in a sequence determinedby said displaceable elements at the beginning of the operation.

34:. In a calculating machine, the combination of, a. set'of numeral printing bars, a set of displaceable elements, each having a normal position to thereby determine a zero point, and automatic mechanism to operate said bars successively in a sequence determined by the positions of said displaceable elements and return said elements to their Zero positions .as an incident of the operation of said bars.

35. In a calculating machine,the combination of a set of numeral printing bars, a set of number wheels, means to operate any of the printing bars and any of the number wheels together, a set of cams geared to the number wheels, and automatic mechanism for operating said means to actuate said bars successively in a sequence determined by the positions of said cams at the beginning of the operation.

36. In a calculating machine, the combination of, a set of numeral printing bars, a set of number wheels, a set of heart-shaped cams geared thereto and automatic mechanism for operating said bars successively in a sequence determined by the position of said heart-shaped cams.

37. In a calculating machine, the combination of a set of numeral printing bars, a totalizer including a set of displaceable elements, tens carrying mechanism connecting said displaceable elements, means to operate any of the printing bars and any of the register wheels of the totalizer together, and automatic mechanism for operating said means to actuate said bars successively in a sequence determined by the positions of said displaceable elements at the beginning of the operation.

38. In a calculating machine the combination of, a set of numeral printing bars, a totalizer including a set of displaceable ele ments, number inserting mechanism for said tot-alizer adapted to insert numbers therein seriatim, a decimal carriage, automatic mechanism for operating said bars successively in a sequence determined by said displaceable elements, and means to advance said decimal carriage step by stepupon the operation of each of said numeral bars by said automatic mechanism.

39. Ina calculating machine, the combinationof a computing device including a set of displaceable elements, a set of type bars, a set of operating members, and automatic means for simultaneously positioning said operating members differentially as determined by said displaceable elements after a total has been accumulated on said displaceable elements, and then operating said positioned operating members successively.

40. In a calculating machine, the combina tion of, a set of numeral printing bars, one of which prints 0, a set of displaceable ele ments, automatic mechanism for operating said bars successively in asequence determined by the positions of said displaceable elements, 'and means preventing the operation of the O printing bar, prior to the operation of another bar of said set.

41. In a calculating machine the combination of, a set of numeral printing bars, one of which prints 0, a platen carrying a work sheet adapted to receive numbers printed by said bars, a computing device including a set of displaceable elements, automatic mechanism for operating said bars successively in a sequence determined by the positions of said displaceable elements, and means preventing the operation of the 0 printing bar to print a O to the left of the highest digit printed by an other bar.

42. In com ination with a typewriting machine adapted to print in either of two colors, of an adding attachment therefor, means to insert numbers therein by the manual operation of the typewriter keys, automatic mechanism to operate said typewriter keys successively in a sequence determined by said adding attachment, and means c-ontrolled by said automatic mechanism brought into operation before the automatic operation of any of said typewriter keys to shift said typewriter ribbon whereby numbers manually printed are printed in one color and numbers automatically printed are printed in a different color. i

43. In a calculating machine the combination of, a set of numeral printing bars, a computing device having a set of displaceable elements and adapted to be thrown either int-o an adding or subtracting condition, a handle, automatic mechanism connected to said handle for operating said bars successively in a sequence determined by the positions of said displaceable elements, and means also operated by said handle for shifting said computing device to the subtracting condition.

44. The combination of a typewriting machine, adding attachment therefor, and mechanism whose operation is determined by the totalizer of said adding attachment, co-operating with said totalizer of said adding attachment for automatically printing by the typewriting numeral key levers the totals indicated by the adding attachment, and at the same time setting the totalizer wheels to zero. v

45. The combination of a typewriting machine, an adding attachment, means for setting it into a subtracting condition, mechanism whose operation is determined by the totalizer of the adding attachment, co-operating with said adding attachmentfor automatically printing by means of the numeral key levers of the typewriting machine the totals indicated) by the adding attachment whereby the same operation re-sets the adding attachment to zero.

46. The combination with a typewriting machine of an adding attachment having a master wheel adapted to insert numbers seriatim in a totalizer and mechanism whose action is automatically determined by said adding'attachment for operating the numeral bars of the typewriting machine to print the totals indicated by said adding attachment.

47. The combination of a typewriting machine having a traveling paper carriage, a master wheel, on the typewriter frame, an accumulator movable with the paper carriage,.mechanism whose action is determined by said accumulator for automatically depressing the numeral key levers, an operative connection between said mechanism and the adding attachment, and means for automatically set-ting the adding mechanism to zero upon theoperation of said first named mechanism.

48. In a calculating machine, the combination of a set of numeral printing bars, one of which prints 0, a set of displaceable elements, automatic mechanism for operating said bars successively in a sequence determined by the positions of said displaceable elements, means preventing the operation of the 0 printing bar to print a 0 at the left of the highest digit printed by any other bar, and means causing the operation of the 0 printing bar repeatedly to print 0 at the right of the highest printed digit.

49. In a calculating machine, the combination with registering mechanism, of selecting mechanism comprising a set of displaceable elements positively connected to the registering devices of a series, and a set of variably movable devices on which said displaceable elements immediately act to aid in setting them in positions corresponding to those of the registering devices, the variably movable devices being held separated from the displaceable elements when those devices are in their normal positions, and those devices being movable all together first to connect them with and then to separate them from the displaceable elements, in

every operation of the selecting mechanism.

50. In a calculating machine, the combination with registering mechanism, of selecting mechanism comprising a set of cams positively connected to the registering devices of a series, and a set of fingers on which said cams immediately act to aid in setting the fingers in positions corresponding to those of the registering devices, the fingers being heldseparated from the cams when the fingers are in their normal positions and'the fingers being movable all together first to connect them with and then to separate them from the cams, in every operation of the selecting mechanism.

51. In a calculating machine, the combination with registering mechanism in which a set of dial Wheels is included, of selecting mechanism comprising a set of cams positively connected to the dial wheels, and a set of fingers on which said cams immediately act to aid in setting the fingers in positions corresponding to those of the dial wheels, the fingers being held separated from the cams when the fingers are in their normal positions, and the fingers being movable all together first to connect them with and then to separate them from the came, in every operation of the selecting mechanism.

52. In a calculating machine, the combination with registering mechanism in which a traveling totalizer is included, of selecting mechanism comprising a set of displaceable elements positively connected to registering devices of a series in the totalizer, and a set of variably movable devices on which said displaceable elements immediately act to aid in setting them in positions corresponding to those of the registering devices, the variably movable devices being mounted on a fixed support and being held separated from the displaceable elements when those devices are in their normal positions, and those devices being movable all together first to connect them with and then to separate them from the displaceable elements, in every operation .of the selecting mechanism.

53. In a machine in which type bars, one for each digit, are actuated successively to print numbers, the combination of selecting mechanism whereby type bars to be actuated to print a number are selected, a lever, and mechanism connected with the lever and operated with a single stroke thereof to actuate those type bars in the proper order.

54. Ina machine in which type bars are actuated successively to do printing, the combination of selecting mechanism whereby type bars to be actuated to print a group of characters are selected, a lever, and mechanism connected with the lever and operated with a single stroke thereof to actuate those type bars in the proper order.

55. In a machine in which type bars are actuated successively to do printing and which embodies selecting mechanism whereby type bars to be actuated to print a group of characters are selected. the combination of a set of displaceable elements. a set of devices on which said displaceable elements act to aid in selecting the type bars. means normally holding said devices separated from the displaceable elements. and means acting at every operation of the selecting mechanism to move all of said devices into contactwith said displaccable elements.

56. In a machine in which type bars are actuated successively to do printing and which embodies selecting mechanism whereby type bars to be actuated to print a group of characters are selected, the combination of a set of displaceable elements. a set of devices on which said displaceable elements act to aid in selecting the type bars. means normally holding said devices separated from the displaceable elements, and means acting at every operation of the selecting mechanism to move all of said devices into contact with said displaceable elements, the last mentioned means including springs and parts driven thereby and transmitting motion therefrom to said devices.

In testimony whereof, I hereunto affiX my signature in the presence of two witnesses. HOLMES MAR-SHALL. Witnesses:

ALBERT H. BATES, BRENNAN B. lVEsT. I 

